1 Ethene may be converted into poly(ethene). What type of reaction is this? (A) Condensation (B) Hydrolysis (C) Oxidation/reduction (D) Polymerisation 2001:1 1 2 You have carried out a first-hand investigation to compare the reactivity of an alkene with its corresponding alkane. (a) State the name of the alkene. 2002:16(a) 1 (b) Outline a procedure to compare the reactivity of this alkene with its corresponding alkane. 2002:16(b) 2 (c) Describe the
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be made‚ as our results were not as accurate as we would have liked them to be. These improvements include being more careful when measuring out the hydrochloric acid in the graduated cylinder‚ putting the lid of the tube on faster right after the calcium chloride has been added so that no gas produced can escape‚ and making sure the very fine grains do not get stuck on the tube instead of going all the way down the tube into the hydrochloric acid. The rate of a chemical reaction is the speed at which
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Subject: Chemistry Topic: The Periodic Table The periodic table is a classification of all the elements based on ATOMIC NUMBER. It is composed of HORIZONTAL PERIODS and VERTICAL GROUPS which contain the elements arranged: *the order of INCREASING ATOMIC NUMBER *in the relation to the ELECTRON STRUCTURE of the atoms *in the relation to their CHEMICAL PROPERTIES (Criteria Used For Placing ELEMENTS in the Periodic Table) 1. ATOMIC NUMBER 2. NUMBER OF SHELLS (PERIOD) 3. NUMBER OF OUTER
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HCl sodium nitrate potassium chloride. magnesium sulfate calcium nitrate sodium carbonate. Safety notes: 1. Wear aprons and goggles. Protective gloves are also available. 2.Carefully read the labels of all chemicals before use. Abide by specific warnings and directions. 3. Collect all materials needed
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Cooling Water Problems and Solutions Course No: M05-009 Credit: 5 PDH A. Bhatia Continuing Education and Development‚ Inc. 9 Greyridge Farm Court Stony Point‚ NY 10980 P: (877) 322-5800 F: (877) 322-4774 info@cedengineering.com COOLING WATER PROBLEMS AND SOLUTIONS Water is used in cooling systems as a heat transfer medium and frequently also as the final point to reject heat into the atmosphere by evaporating inside cooling towers. Depending on the quality of available fresh
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calculations to determine the quantities (masses‚ volumes) of reactants and products involved in chemical reactions. It is a very mathematical part of chemistry. In this experiment‚ you will react a known amount of sodium carbonate solution with a known amount of calcium chloride solution. The skeletal (unbalanced) equation for the resulting double replacement reaction is: Na2CO3(aq) + CaCl2(aq) Æ NaCl(aq) + CaCO3(s) Note that three of the chemicals have their states or phases designated
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Seawater is slightly basic (meaning pH > 7)‚ and the process is a shift towards pH-neutral conditions rather than a transition to acidic conditions (pH < 7). Ocean alkalinity is not changed by the process‚ or may increase over long time periods due to carbonate dissolution. An estimated 30–40% of the carbon dioxide from human activity released into the atmosphere dissolves into oceans‚ rivers and lakes. To achieve chemical equality‚ some of it reacts with the water to form carbonic acid. Some of these extra
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Calcium hypochlorite is a chemical compound with formula Ca(ClO)2. It is widely used for water treatment and as a bleaching agent. This chemical is considered to be relatively stable and has greater available chlorine than sodium hypochlorite (liquid bleach). Preparation It is manufactured by the calcium process: ~\mathrm{2Cl_2 + 2Ca(OH)_2\longrightarrow \ Ca(OCl)_2 + CaCl_2 + 2H_2O}. "Bleaching powder" is a mixture of calcium hypochlorite (Ca(OCl)2) and the basic chloride CaCl2‚ H2O with
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Sugar‚ Calcium carbonate)‚ By Functionality (Fillers‚ Binders‚ Lubricants‚ Preservatives)] – Global Forecast to 2018 " analyzes and studies the major market drivers‚ restraints‚ and opportunities in North America‚ Europe‚ Asia-Pacific‚ and the Rest of the World. Browse 112 market data tables with 48 figures spread through 315 pages and in-depth TOC on "Pharmaceutical Excipients Market [By Products (Carbohydrates‚ Oleochemicals‚ Petrochemicals‚ Polymers‚ Microcrystalline Cellulose‚ Sugar‚ Calcium carbonate)
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Limescale is calcium carbonate and it appears when the minerals from diluted water deposit on certain surfaces of your home. It can be easily found around the sinks‚ taps or shower. The best way to remove the limescale is to prevent it‚ because it becomes much harder to remove it once it starts to build up. The fact that it affects our kitchen sink can be very annoying and frustrating‚ so here is what you can do in order to remove limescale from your kitchen sink. Scrab it with limescale removal
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